Spot every change
Compare two versions line by line and see what was added, removed, or left unchanged.
A clear opening line.The old sentence stays here.A stronger new sentence appears.A shared ending.Clear rules, private processing
The comparison uses a longest-common-subsequence diff. Options let you ignore letter case or surrounding whitespace without changing the original text.
How to use this tool
Method and limits
Line diffs are predictable for documents, lists, configuration, and copied table data. This tool does not claim a changed word is an entire document rewrite: unchanged lines remain visible, and the summary reports additions and removals separately.
No. Both texts and the diff stay in the browser.
Not directly. Copy their text into the editors; layout and non-text document features are outside this tool’s scope.